Why is 'Blimey' Hall With a Salmon?

'Blimey' Hall with a salmon. Bedworth. 1920s
IMAGE LOCATION: (Warwickshire County Record Office) PEOPLE IN PHOTO: Hall, 'Blimey', Hall as a surname
Reference: PH, 649/62, img: 505
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There are so many questions to this picture. Why is he with a salmon? Why is he dressed in a suit to be in the photo with a salmon? Why is he smoking next to the salmon? Why is his name ‘Blimey’? I’ve wanted to know the answers for ages and had no luck finding them.

Please help!